Speaker



FIG. 1 is a perspective view of the speaker showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational view thereof; the left side elevational view is a mirror image of the right side;

FIG. 4 is a top plan view thereof; the bottom plan view is a mirror image of the top plan; and,

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a speaker, as shown and described. 